Robust/src/IR/Flat/BuildCode.java

   1 package IR.Flat;
   2 import IR.Tree.FlagExpressionNode;
   3 import IR.Tree.DNFFlag;
   4 import IR.Tree.DNFFlagAtom;
   5 import IR.Tree.TagExpressionList;
   6 import IR.*;
   7 import java.util.*;
   8 import java.io.*;
   9 import Util.Relation;
  10 import Analysis.TaskStateAnalysis.FlagState;
  11 import Analysis.TaskStateAnalysis.OptionalTaskDescriptor;
  12 import Analysis.TaskStateAnalysis.Predicate;
  13 import Analysis.Locality.LocalityAnalysis;
  14 import Analysis.Locality.LocalityBinding;
  15
  16 public class BuildCode {
  17     State state;
  18     Hashtable temptovar;
  19     Hashtable paramstable;
  20     Hashtable tempstable;
  21     Hashtable fieldorder;
  22     Hashtable flagorder;
  23     int tag=0;
  24     String localsprefix="___locals___";
  25     String paramsprefix="___params___";
  26     String oidstr="___nextobject___";
  27     String nextobjstr="___nextobject___";
  28     String localcopystr="___localcopy___";
  29     public static boolean GENERATEPRECISEGC=false;
  30     public static String PREFIX="";
  31     public static String arraytype="ArrayObject";
  32     Virtual virtualcalls;
  33     TypeUtil typeutil;
  34     private int maxtaskparams=0;
  35     private int maxcount=0;
  36     ClassDescriptor[] cdarray;
  37     TypeDescriptor[] arraytable;
  38     LocalityAnalysis locality;
  39     Hashtable<TempDescriptor, TempDescriptor> backuptable;
  40     Hashtable<LocalityBinding, TempDescriptor> reverttable;
  41
  42     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil) {
  43         this(st, temptovar, typeutil, null);
  44     }
  45
  46     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, LocalityAnalysis locality) {
  47         state=st;
  48         this.temptovar=temptovar;
  49         paramstable=new Hashtable();
  50         tempstable=new Hashtable();
  51         fieldorder=new Hashtable();
  52         flagorder=new Hashtable();
  53         this.typeutil=typeutil;
  54         virtualcalls=new Virtual(state,locality);
  55         if (locality!=null) {
  56             this.locality=locality;
  57             this.backuptable=new Hashtable<TempDescriptor, TempDescriptor>();
  58             this.reverttable=new Hashtable<LocalityBinding, TempDescriptor>();
  59         }
  60     }
  61
  62     /** The buildCode method outputs C code for all the methods.  The Flat
  63      * versions of the methods must already be generated and stored in
  64      * the State object. */
  65
  66     public void buildCode() {
  67         /* Create output streams to write to */
  68         PrintWriter outclassdefs=null;
  69         PrintWriter outstructs=null;
  70         PrintWriter outrepairstructs=null;
  71         PrintWriter outmethodheader=null;
  72         PrintWriter outmethod=null;
  73         PrintWriter outvirtual=null;
  74         PrintWriter outtask=null;
  75         PrintWriter outtaskdefs=null;
  76         PrintWriter outoptionalarrays=null;
  77         PrintWriter optionalheaders=null;
  78
  79         try {
  80             outstructs=new PrintWriter(new FileOutputStream(PREFIX+"structdefs.h"), true);
  81             outmethodheader=new PrintWriter(new FileOutputStream(PREFIX+"methodheaders.h"), true);
  82             outclassdefs=new PrintWriter(new FileOutputStream(PREFIX+"classdefs.h"), true);
  83             outmethod=new PrintWriter(new FileOutputStream(PREFIX+"methods.c"), true);
  84             outvirtual=new PrintWriter(new FileOutputStream(PREFIX+"virtualtable.h"), true);
  85             if (state.TASK) {
  86                 outtask=new PrintWriter(new FileOutputStream(PREFIX+"task.h"), true);
  87                 outtaskdefs=new PrintWriter(new FileOutputStream(PREFIX+"taskdefs.c"), true);
  88                 if (state.OPTIONAL){
  89                     outoptionalarrays=new PrintWriter(new FileOutputStream(PREFIX+"optionalarrays.c"), true);
  90                     optionalheaders=new PrintWriter(new FileOutputStream(PREFIX+"optionalstruct.h"), true);
  91                 }
  92             }
  93             if (state.structfile!=null) {
  94                 outrepairstructs=new PrintWriter(new FileOutputStream(PREFIX+state.structfile+".struct"), true);
  95             }
  96         } catch (Exception e) {
  97             e.printStackTrace();
  98             System.exit(-1);
  99         }
 100
 101         /* Build the virtual dispatch tables */
 102         buildVirtualTables(outvirtual);
 103
 104         /* Output includes */
 105         outmethodheader.println("#ifndef METHODHEADERS_H");
 106         outmethodheader.println("#define METHODHEADERS_H");
 107         outmethodheader.println("#include \"structdefs.h\"");
 108
 109         /* Output Structures */
 110         outputStructs(outstructs);
 111
 112         // Output the C class declarations
 113         // These could mutually reference each other
 114         outputClassDeclarations(outclassdefs);
 115
 116         // Output function prototypes and structures for parameters
 117         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 118         while(it.hasNext()) {
 119             ClassDescriptor cn=(ClassDescriptor)it.next();
 120             generateCallStructs(cn, outclassdefs, outstructs, outmethodheader);
 121         }
 122         outclassdefs.close();
 123
 124         if (state.TASK) {
 125             /* Map flags to integers */
 126             /* The runtime keeps track of flags using these integers */
 127             it=state.getClassSymbolTable().getDescriptorsIterator();
 128             while(it.hasNext()) {
 129                 ClassDescriptor cn=(ClassDescriptor)it.next();
 130                 mapFlags(cn);
 131             }
 132             /* Generate Tasks */
 133             generateTaskStructs(outstructs, outmethodheader);
 134
 135             /* Outputs generic task structures if this is a task
 136                program */
 137             outputTaskTypes(outtask);
 138         }
 139
 140         /* Build the actual methods */
 141         outputMethods(outmethod);
 142
 143         if (state.TASK) {
 144             /* Output code for tasks */
 145             outputTaskCode(outtaskdefs, outmethod);
 146             outtaskdefs.close();
 147             /* Record maximum number of task parameters */
 148             outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
 149         } else if (state.main!=null) {
 150             /* Generate main method */
 151             outputMainMethod(outmethod);
 152         }
 153
 154         /* Generate information for task with optional parameters */
 155         if (state.TASK&&state.OPTIONAL){
 156             generateOptionalArrays(outoptionalarrays, optionalheaders, state.getAnalysisResult(), state.getOptionalTaskDescriptors());
 157             outoptionalarrays.close();
 158         }
 159
 160         /* Output structure definitions for repair tool */
 161         if (state.structfile!=null) {
 162             buildRepairStructs(outrepairstructs);
 163             outrepairstructs.close();
 164         }
 165
 166         /* Close files */
 167         outmethodheader.println("#endif");
 168         outmethodheader.close();
 169         outmethod.close();
 170         outstructs.println("#endif");
 171         outstructs.close();
 172     }
 173
 174     /* This code just generates the main C method for java programs.
 175      * The main C method packs up the arguments into a string array
 176      * and passes it to the java main method. */
 177
 178     private void outputMainMethod(PrintWriter outmethod) {
 179         outmethod.println("int main(int argc, const char *argv[]) {");
 180         outmethod.println("  int i;");
 181         if (state.DSM) {
 182             outmethod.println("if (dstmStart(argv[0])) {");
 183             if (GENERATEPRECISEGC) {
 184                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-2);");
 185             } else {
 186                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-2);");
 187             }
 188         } else {
 189             if (GENERATEPRECISEGC) {
 190                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-1);");
 191             } else {
 192                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-1);");
 193             }
 194         }
 195         if (state.THREAD) {
 196             outmethod.println("initializethreads();");
 197         }
 198         if (state.DSM) {
 199             outmethod.println("  for(i=2;i<argc;i++) {");
 200         } else
 201             outmethod.println("  for(i=1;i<argc;i++) {");
 202         outmethod.println("    int length=strlen(argv[i]);");
 203         if (GENERATEPRECISEGC) {
 204             outmethod.println("    struct ___String___ *newstring=NewString(NULL, argv[i], length);");
 205         } else {
 206             outmethod.println("    struct ___String___ *newstring=NewString(argv[i], length);");
 207         }
 208         if (state.DSM)
 209             outmethod.println("    ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-2]=newstring;");
 210         else
 211             outmethod.println("    ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-1]=newstring;");
 212         outmethod.println("  }");
 213
 214
 215         MethodDescriptor md=typeutil.getMain();
 216         ClassDescriptor cd=typeutil.getMainClass();
 217
 218         outmethod.println("   {");
 219         if (GENERATEPRECISEGC) {
 220             if (state.DSM) {
 221                 outmethod.print("       struct "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
 222             } else
 223                 outmethod.print("       struct "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
 224             outmethod.println("1, NULL,"+"stringarray};");
 225             if (state.DSM)
 226                 outmethod.println("     "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
 227             else
 228                 outmethod.println("     "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
 229         } else {
 230             if (state.DSM)
 231                 outmethod.println("     "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
 232             else
 233                 outmethod.println("     "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
 234         }
 235         outmethod.println("   }");
 236
 237         if (state.DSM) {
 238             outmethod.println("}");
 239         }
 240
 241         if (state.THREAD) {
 242             outmethod.println("pthread_mutex_lock(&gclistlock);");
 243             outmethod.println("threadcount--;");
 244             outmethod.println("pthread_cond_signal(&gccond);");
 245             outmethod.println("pthread_mutex_unlock(&gclistlock);");
 246             outmethod.println("pthread_exit(NULL);");
 247         }
 248
 249
 250         outmethod.println("}");
 251     }
 252
 253     /* This method outputs code for each task. */
 254
 255     private void outputTaskCode(PrintWriter outtaskdefs, PrintWriter outmethod) {
 256         /* Compile task based program */
 257         outtaskdefs.println("#include \"task.h\"");
 258         outtaskdefs.println("#include \"methodheaders.h\"");
 259         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
 260         while(taskit.hasNext()) {
 261             TaskDescriptor td=(TaskDescriptor)taskit.next();
 262             FlatMethod fm=state.getMethodFlat(td);
 263             generateFlatMethod(fm, null, outmethod);
 264             generateTaskDescriptor(outtaskdefs, fm, td);
 265         }
 266
 267         //Output task descriptors
 268         taskit=state.getTaskSymbolTable().getDescriptorsIterator();
 269         outtaskdefs.println("struct taskdescriptor * taskarray[]= {");
 270         boolean first=true;
 271         while(taskit.hasNext()) {
 272             TaskDescriptor td=(TaskDescriptor)taskit.next();
 273             if (first)
 274                 first=false;
 275             else
 276                 outtaskdefs.println(",");
 277             outtaskdefs.print("&task_"+td.getSafeSymbol());
 278         }
 279         outtaskdefs.println("};");
 280
 281         outtaskdefs.println("int numtasks="+state.getTaskSymbolTable().getValueSet().size()+";");
 282     }
 283
 284     /* This method outputs most of the methods.c file.  This includes
 285      * some standard includes and then an array with the sizes of
 286      * objets and array that stores supertype and then the code for
 287      * the Java methods.. */
 288
 289     private void outputMethods(PrintWriter outmethod) {
 290         outmethod.println("#include \"methodheaders.h\"");
 291         outmethod.println("#include \"virtualtable.h\"");
 292         outmethod.println("#include <runtime.h>");
 293         if (state.DSM)
 294             outmethod.println("#include \"localobjects.h\"");
 295         if (state.THREAD)
 296             outmethod.println("#include <thread.h>");
 297         if (state.main!=null) {
 298             outmethod.println("#include <string.h>");
 299         }
 300         if (state.CONSCHECK) {
 301             outmethod.println("#include \"checkers.h\"");
 302         }
 303         //Store the sizes of classes & array elements
 304         generateSizeArray(outmethod);
 305
 306         //Store table of supertypes
 307         generateSuperTypeTable(outmethod);
 308
 309         //Store the layout of classes
 310         generateLayoutStructs(outmethod);
 311
 312         /* Generate code for methods */
 313         if (state.DSM) {
 314             for(Iterator<LocalityBinding> lbit=locality.getLocalityBindings().iterator();lbit.hasNext();) {
 315                 LocalityBinding lb=lbit.next();
 316                 MethodDescriptor md=lb.getMethod();
 317                 FlatMethod fm=state.getMethodFlat(md);
 318                 if (!md.getModifiers().isNative()) {
 319                     generateFlatMethod(fm, lb, outmethod);
 320                 }
 321             }
 322         } else {
 323             Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 324             while(classit.hasNext()) {
 325                 ClassDescriptor cn=(ClassDescriptor)classit.next();
 326                 Iterator methodit=cn.getMethods();
 327                 while(methodit.hasNext()) {
 328                     /* Classify parameters */
 329                     MethodDescriptor md=(MethodDescriptor)methodit.next();
 330                     FlatMethod fm=state.getMethodFlat(md);
 331                     if (!md.getModifiers().isNative())
 332                         generateFlatMethod(fm, null, outmethod);
 333                 }
 334             }
 335         }
 336     }
 337
 338     private void outputStructs(PrintWriter outstructs) {
 339         outstructs.println("#ifndef STRUCTDEFS_H");
 340         outstructs.println("#define STRUCTDEFS_H");
 341         outstructs.println("#include \"classdefs.h\"");
 342
 343         /* Output #defines that the runtime uses to determine type
 344          * numbers for various objects it needs */
 345
 346         outstructs.println("#define STRINGARRAYTYPE "+
 347                            (state.getArrayNumber(
 348                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.StringClass))).makeArray(state))+state.numClasses()));
 349
 350         outstructs.println("#define OBJECTARRAYTYPE "+
 351                            (state.getArrayNumber(
 352                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.ObjectClass))).makeArray(state))+state.numClasses()));
 353
 354
 355         outstructs.println("#define STRINGTYPE "+typeutil.getClass(TypeUtil.StringClass).getId());
 356         outstructs.println("#define CHARARRAYTYPE "+
 357                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.CHAR)).makeArray(state))+state.numClasses()));
 358
 359         outstructs.println("#define BYTEARRAYTYPE "+
 360                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state))+state.numClasses()));
 361
 362         outstructs.println("#define BYTEARRAYARRAYTYPE "+
 363                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state).makeArray(state))+state.numClasses()));
 364
 365         outstructs.println("#define NUMCLASSES "+state.numClasses());
 366         if (state.TASK) {
 367             outstructs.println("#define STARTUPTYPE "+typeutil.getClass(TypeUtil.StartupClass).getId());
 368             outstructs.println("#define TAGTYPE "+typeutil.getClass(TypeUtil.TagClass).getId());
 369             outstructs.println("#define TAGARRAYTYPE "+
 370                                (state.getArrayNumber(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass)).makeArray(state))+state.numClasses()));
 371         }
 372     }
 373
 374     private void outputClassDeclarations(PrintWriter outclassdefs) {
 375         if (state.THREAD)
 376             outclassdefs.println("#include <pthread.h>");
 377         if(state.OPTIONAL)
 378             outclassdefs.println("#include \"optionalstruct.h\"");
 379         outclassdefs.println("struct "+arraytype+";");
 380         /* Start by declaring all structs */
 381         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 382         while(it.hasNext()) {
 383             ClassDescriptor cn=(ClassDescriptor)it.next();
 384             outclassdefs.println("struct "+cn.getSafeSymbol()+";");
 385         }
 386         outclassdefs.println("");
 387         //Print out definition for array type
 388         outclassdefs.println("struct "+arraytype+" {");
 389         outclassdefs.println("  int type;");
 390         if (state.THREAD) {
 391             outclassdefs.println("  pthread_t tid;");
 392             outclassdefs.println("  void * lockentry;");
 393             outclassdefs.println("  int lockcount;");
 394         }
 395         if (state.TASK) {
 396             outclassdefs.println("  int flag;");
 397             outclassdefs.println("  void * flagptr;");
 398             if(state.OPTIONAL){
 399                 outclassdefs.println("  int failedstatus;");
 400                 outclassdefs.println("  int hashcode;");
 401                 outclassdefs.println("  int numexitfses;");
 402                 outclassdefs.println("  int * exitfses;");
 403                 outclassdefs.println("  int numotds;");
 404                 outclassdefs.println("  struct optionaltaskdescriptor ** otds;");
 405             }
 406         }
 407         printClassStruct(typeutil.getClass(TypeUtil.ObjectClass), outclassdefs);
 408
 409         outclassdefs.println("  int ___length___;");
 410         outclassdefs.println("};\n");
 411         outclassdefs.println("extern int classsize[];");
 412         outclassdefs.println("extern int hasflags[];");
 413         outclassdefs.println("extern unsigned int * pointerarray[];");
 414         outclassdefs.println("extern int supertypes[];");
 415     }
 416
 417     /** Prints out definitions for generic task structures */
 418
 419     private void outputTaskTypes(PrintWriter outtask) {
 420         outtask.println("#ifndef _TASK_H");
 421         outtask.println("#define _TASK_H");
 422         outtask.println("struct parameterdescriptor {");
 423         outtask.println("int type;");
 424         outtask.println("int numberterms;");
 425         outtask.println("int *intarray;");
 426         outtask.println("void * queue;");
 427         outtask.println("int numbertags;");
 428         outtask.println("int *tagarray;");
 429         outtask.println("};");
 430
 431         outtask.println("struct taskdescriptor {");
 432         outtask.println("void * taskptr;");
 433         outtask.println("int numParameters;");
 434         outtask.println("int numTotal;");
 435         outtask.println("struct parameterdescriptor **descriptorarray;");
 436         outtask.println("char * name;");
 437         outtask.println("};");
 438         outtask.println("extern struct taskdescriptor * taskarray[];");
 439         outtask.println("extern numtasks;");
 440         outtask.println("#endif");
 441     }
 442
 443
 444     private void buildRepairStructs(PrintWriter outrepairstructs) {
 445         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 446         while(classit.hasNext()) {
 447             ClassDescriptor cn=(ClassDescriptor)classit.next();
 448             outrepairstructs.println("structure "+cn.getSymbol()+" {");
 449             outrepairstructs.println("  int __type__;");
 450             if (state.TASK) {
 451                 outrepairstructs.println("  int __flag__;");
 452                 outrepairstructs.println("  int __flagptr__;");
 453             }
 454             printRepairStruct(cn, outrepairstructs);
 455             outrepairstructs.println("}\n");
 456         }
 457
 458         for(int i=0;i<state.numArrays();i++) {
 459             TypeDescriptor tdarray=arraytable[i];
 460             TypeDescriptor tdelement=tdarray.dereference();
 461             outrepairstructs.println("structure "+arraytype+"_"+state.getArrayNumber(tdarray)+" {");
 462             outrepairstructs.println("  int __type__;");
 463             printRepairStruct(typeutil.getClass(TypeUtil.ObjectClass), outrepairstructs);
 464             outrepairstructs.println("  int length;");
 465             /*
 466               // Need to add support to repair tool for this
 467               if (tdelement.isClass()||tdelement.isArray())
 468                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" * elem[this.length];");
 469             else
 470                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" elem[this.length];");
 471             */
 472             outrepairstructs.println("}\n");
 473         }
 474     }
 475
 476     private void printRepairStruct(ClassDescriptor cn, PrintWriter output) {
 477         ClassDescriptor sp=cn.getSuperDesc();
 478         if (sp!=null)
 479             printRepairStruct(sp, output);
 480
 481         Vector fields=(Vector)fieldorder.get(cn);
 482
 483         for(int i=0;i<fields.size();i++) {
 484             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 485             if (fd.getType().isArray()) {
 486                 output.println("  "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
 487             } else if (fd.getType().isClass())
 488                 output.println("  "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
 489             else if (fd.getType().isFloat())
 490                 output.println("  int "+fd.getSymbol()+"; /* really float */");
 491             else
 492                 output.println("  "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
 493         }
 494     }
 495
 496     /** This method outputs TaskDescriptor information */
 497     void generateTaskDescriptor(PrintWriter output, FlatMethod fm, TaskDescriptor task) {
 498         for (int i=0;i<task.numParameters();i++) {
 499             VarDescriptor param_var=task.getParameter(i);
 500             TypeDescriptor param_type=task.getParamType(i);
 501             FlagExpressionNode param_flag=task.getFlag(param_var);
 502             TagExpressionList param_tag=task.getTag(param_var);
 503
 504             int dnfterms;
 505             if (param_flag==null) {
 506                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 507                 output.println("0x0, 0x0 };");
 508                 dnfterms=1;
 509             } else {
 510                 DNFFlag dflag=param_flag.getDNF();
 511                 dnfterms=dflag.size();
 512
 513                 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
 514                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 515                 for(int j=0;j<dflag.size();j++) {
 516                     if (j!=0)
 517                         output.println(",");
 518                     Vector term=dflag.get(j);
 519                     int andmask=0;
 520                     int checkmask=0;
 521                     for(int k=0;k<term.size();k++) {
 522                         DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
 523                         FlagDescriptor fd=dfa.getFlag();
 524                         boolean negated=dfa.getNegated();
 525                         int flagid=1<<((Integer)flags.get(fd)).intValue();
 526                         andmask|=flagid;
 527                         if (!negated)
 528                             checkmask|=flagid;
 529                     }
 530                     output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
 531                 }
 532                 output.println("};");
 533             }
 534
 535             output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
 536             //BUG...added next line to fix, test with any task program
 537             if (param_tag!=null)
 538                 for(int j=0;j<param_tag.numTags();j++) {
 539                     if (j!=0)
 540                         output.println(",");
 541                     /* for each tag we need */
 542                     /* which slot it is */
 543                     /* what type it is */
 544                     TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
 545                     TempDescriptor tmp=param_tag.getTemp(j);
 546                     int slot=fm.getTagInt(tmp);
 547                     output.println(slot+", "+state.getTagId(tvd.getTag()));
 548                 }
 549             output.println("};");
 550
 551             output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
 552             output.println("/* type */"+param_type.getClassDesc().getId()+",");
 553             output.println("/* number of DNF terms */"+dnfterms+",");
 554             output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
 555             output.println("0,");
 556             //BUG, added next line to fix and else statement...test
 557             //with any task program
 558             if (param_tag!=null)
 559                 output.println("/* number of tags */"+param_tag.numTags()+",");
 560             else
 561                 output.println("/* number of tags */ 0,");
 562             output.println("parametertag_"+i+"_"+task.getSafeSymbol());
 563             output.println("};");
 564         }
 565
 566
 567         output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
 568         for (int i=0;i<task.numParameters();i++) {
 569             if (i!=0)
 570                 output.println(",");
 571             output.print("&parameter_"+i+"_"+task.getSafeSymbol());
 572         }
 573         output.println("};");
 574
 575         output.println("struct taskdescriptor task_"+task.getSafeSymbol()+"={");
 576         output.println("&"+task.getSafeSymbol()+",");
 577         output.println("/* number of parameters */" +task.numParameters() + ",");
 578         int numtotal=task.numParameters()+fm.numTags();
 579         output.println("/* number total parameters */" +numtotal + ",");
 580         output.println("parameterdescriptors_"+task.getSafeSymbol()+",");
 581         output.println("\""+task.getSymbol()+"\"");
 582         output.println("};");
 583     }
 584
 585
 586     /** The buildVirtualTables method outputs the virtual dispatch
 587      * tables for methods. */
 588
 589     private void buildVirtualTables(PrintWriter outvirtual) {
 590         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 591         while(classit.hasNext()) {
 592             ClassDescriptor cd=(ClassDescriptor)classit.next();
 593             if (virtualcalls.getMethodCount(cd)>maxcount)
 594                 maxcount=virtualcalls.getMethodCount(cd);
 595         }
 596         MethodDescriptor[][] virtualtable=null;
 597         LocalityBinding[][] lbvirtualtable=null;
 598         if (state.DSM)
 599             lbvirtualtable=new LocalityBinding[state.numClasses()+state.numArrays()][maxcount];
 600         else
 601             virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
 602
 603         /* Fill in virtual table */
 604         classit=state.getClassSymbolTable().getDescriptorsIterator();
 605         while(classit.hasNext()) {
 606             ClassDescriptor cd=(ClassDescriptor)classit.next();
 607             if (state.DSM)
 608                 fillinRow(cd, lbvirtualtable, cd.getId());
 609             else
 610                 fillinRow(cd, virtualtable, cd.getId());
 611         }
 612
 613         ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
 614         Iterator arrayit=state.getArrayIterator();
 615         while(arrayit.hasNext()) {
 616             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 617             int id=state.getArrayNumber(td);
 618             if (state.DSM)
 619                 fillinRow(objectcd, lbvirtualtable, id+state.numClasses());
 620             else
 621                 fillinRow(objectcd, virtualtable, id+state.numClasses());
 622         }
 623
 624         outvirtual.print("void * virtualtable[]={");
 625         boolean needcomma=false;
 626         for(int i=0;i<state.numClasses()+state.numArrays();i++) {
 627             for(int j=0;j<maxcount;j++) {
 628                 if (needcomma)
 629                     outvirtual.print(", ");
 630                 if (state.DSM&&lbvirtualtable[i][j]!=null) {
 631                     LocalityBinding lb=lbvirtualtable[i][j];
 632                     MethodDescriptor md=lb.getMethod();
 633                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 634                 } else if (!state.DSM&&virtualtable[i][j]!=null) {
 635                     MethodDescriptor md=virtualtable[i][j];
 636                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 637                 } else {
 638                     outvirtual.print("0");
 639                 }
 640                 needcomma=true;
 641             }
 642             outvirtual.println("");
 643         }
 644         outvirtual.println("};");
 645         outvirtual.close();
 646     }
 647
 648     private void fillinRow(ClassDescriptor cd, MethodDescriptor[][] virtualtable, int rownum) {
 649         /* Get inherited methods */
 650         if (cd.getSuperDesc()!=null)
 651             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 652         /* Override them with our methods */
 653         for(Iterator it=cd.getMethods();it.hasNext();) {
 654             MethodDescriptor md=(MethodDescriptor)it.next();
 655             if (md.isStatic()||md.getReturnType()==null)
 656                 continue;
 657             int methodnum=virtualcalls.getMethodNumber(md);
 658             virtualtable[rownum][methodnum]=md;
 659         }
 660     }
 661
 662     private void fillinRow(ClassDescriptor cd, LocalityBinding[][] virtualtable, int rownum) {
 663         /* Get inherited methods */
 664         if (cd.getSuperDesc()!=null)
 665             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 666         /* Override them with our methods */
 667         if (locality.getClassBindings(cd)!=null)
 668             for(Iterator<LocalityBinding> lbit=locality.getClassBindings(cd).iterator();lbit.hasNext();) {
 669                 LocalityBinding lb=lbit.next();
 670                 MethodDescriptor md=lb.getMethod();
 671                 //Is the method static or a constructor
 672                 if (md.isStatic()||md.getReturnType()==null)
 673                     continue;
 674                 int methodnum=virtualcalls.getLocalityNumber(lb);
 675                 virtualtable[rownum][methodnum]=lb;
 676             }
 677     }
 678
 679
 680     /** Generate array that contains the sizes of class objects.  The
 681      * object allocation functions in the runtime use this
 682      * information. */
 683
 684     private void generateSizeArray(PrintWriter outclassdefs) {
 685         outclassdefs.print("int classsize[]={");
 686         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 687         cdarray=new ClassDescriptor[state.numClasses()];
 688         while(it.hasNext()) {
 689             ClassDescriptor cd=(ClassDescriptor)it.next();
 690             cdarray[cd.getId()]=cd;
 691         }
 692         boolean needcomma=false;
 693         for(int i=0;i<state.numClasses();i++) {
 694             if (needcomma)
 695                 outclassdefs.print(", ");
 696             outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
 697             needcomma=true;
 698         }
 699
 700         arraytable=new TypeDescriptor[state.numArrays()];
 701
 702         Iterator arrayit=state.getArrayIterator();
 703         while(arrayit.hasNext()) {
 704             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 705             int id=state.getArrayNumber(td);
 706             arraytable[id]=td;
 707         }
 708
 709         for(int i=0;i<state.numArrays();i++) {
 710             if (needcomma)
 711                 outclassdefs.print(", ");
 712             TypeDescriptor tdelement=arraytable[i].dereference();
 713             if (tdelement.isArray()||tdelement.isClass())
 714                 outclassdefs.print("sizeof(void *)");
 715             else
 716                 outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
 717             needcomma=true;
 718         }
 719
 720         outclassdefs.println("};");
 721     }
 722
 723     /** Constructs params and temp objects for each method or task.
 724      * These objects tell the compiler which temps need to be
 725      * allocated.  */
 726
 727     private void generateTempStructs(FlatMethod fm, LocalityBinding lb) {
 728         MethodDescriptor md=fm.getMethod();
 729         TaskDescriptor task=fm.getTask();
 730         Set<TempDescriptor> saveset=lb!=null?locality.getTempSet(lb):null;
 731         ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
 732
 733         if (md!=null)
 734             paramstable.put(md, objectparams);
 735         else
 736             paramstable.put(task, objectparams);
 737
 738         for(int i=0;i<fm.numParameters();i++) {
 739             TempDescriptor temp=fm.getParameter(i);
 740             TypeDescriptor type=temp.getType();
 741             if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
 742                 objectparams.addPtr(temp);
 743             else
 744                 objectparams.addPrim(temp);
 745             if(lb!=null&&saveset.contains(temp)) {
 746                 backuptable.put(temp, temp.createNew());
 747             }
 748         }
 749
 750         for(int i=0;i<fm.numTags();i++) {
 751             TempDescriptor temp=fm.getTag(i);
 752             if (GENERATEPRECISEGC)
 753                 objectparams.addPtr(temp);
 754             else
 755                 objectparams.addPrim(temp);
 756         }
 757
 758         TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
 759         if (md!=null)
 760             tempstable.put(md, objecttemps);
 761         else
 762             tempstable.put(task, objecttemps);
 763
 764         for(Iterator nodeit=fm.getNodeSet().iterator();nodeit.hasNext();) {
 765             FlatNode fn=(FlatNode)nodeit.next();
 766             TempDescriptor[] writes=fn.writesTemps();
 767             for(int i=0;i<writes.length;i++) {
 768                 TempDescriptor temp=writes[i];
 769                 TypeDescriptor type=temp.getType();
 770                 if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
 771                     objecttemps.addPtr(temp);
 772                 else
 773                     objecttemps.addPrim(temp);
 774                 if(lb!=null&&saveset.contains(temp)&&
 775                    !backuptable.containsKey(temp))
 776                     backuptable.put(temp, temp.createNew());
 777             }
 778         }
 779
 780         /* Create backup temps */
 781         if (lb!=null) {
 782             for(Iterator<TempDescriptor> tmpit=backuptable.values().iterator();tmpit.hasNext();) {
 783                 TempDescriptor tmp=tmpit.next();
 784                 TypeDescriptor type=tmp.getType();
 785                 if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
 786                     objecttemps.addPtr(tmp);
 787                 else
 788                     objecttemps.addPrim(tmp);
 789             }
 790             /* Create temp to hold revert table */
 791             if (lb.getHasAtomic()) {
 792                 TempDescriptor reverttmp=new TempDescriptor("revertlist", typeutil.getClass(TypeUtil.ObjectClass));
 793                 reverttable.put(lb, reverttmp);
 794             }
 795         }
 796     }
 797
 798     /** This method outputs the following information about classes
 799      * and arrays:
 800      * (1) For classes, what are the locations of pointers.
 801      * (2) For arrays, does the array contain pointers or primitives.
 802      * (3) For classes, does the class contain flags.
 803      */
 804
 805     private void generateLayoutStructs(PrintWriter output) {
 806         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 807         while(it.hasNext()) {
 808             ClassDescriptor cn=(ClassDescriptor)it.next();
 809             output.println("unsigned int "+cn.getSafeSymbol()+"_pointers[]={");
 810             Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
 811             int count=0;
 812             while(allit.hasNext()) {
 813                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 814                 TypeDescriptor type=fd.getType();
 815                 if (type.isPtr()||type.isArray())
 816                     count++;
 817             }
 818             output.print(count);
 819             allit=cn.getFieldTable().getAllDescriptorsIterator();
 820             while(allit.hasNext()) {
 821                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 822                 TypeDescriptor type=fd.getType();
 823                 if (type.isPtr()||type.isArray()) {
 824                     output.println(",");
 825                     output.print("((unsigned int)&(((struct "+cn.getSafeSymbol() +" *)0)->"+fd.getSafeSymbol()+"))");
 826                 }
 827             }
 828             output.println("};");
 829         }
 830         output.println("unsigned int * pointerarray[]={");
 831         boolean needcomma=false;
 832         for(int i=0;i<state.numClasses();i++) {
 833             ClassDescriptor cn=cdarray[i];
 834             if (needcomma)
 835                 output.println(",");
 836             needcomma=true;
 837             output.print(cn.getSafeSymbol()+"_pointers");
 838         }
 839
 840         for(int i=0;i<state.numArrays();i++) {
 841             if (needcomma)
 842                 output.println(", ");
 843             TypeDescriptor tdelement=arraytable[i].dereference();
 844             if (tdelement.isArray()||tdelement.isClass())
 845                 output.print("((unsigned int *)1)");
 846             else
 847                 output.print("0");
 848             needcomma=true;
 849         }
 850
 851         output.println("};");
 852         needcomma=false;
 853         output.println("int hasflags[]={");
 854         for(int i=0;i<state.numClasses();i++) {
 855             ClassDescriptor cn=cdarray[i];
 856             if (needcomma)
 857                 output.println(", ");
 858             needcomma=true;
 859             if (cn.hasFlags())
 860                 output.print("1");
 861             else
 862                 output.print("0");
 863         }
 864         output.println("};");
 865     }
 866
 867     /** Print out table to give us supertypes */
 868     private void generateSuperTypeTable(PrintWriter output) {
 869         output.println("int supertypes[]={");
 870         boolean needcomma=false;
 871         for(int i=0;i<state.numClasses();i++) {
 872             ClassDescriptor cn=cdarray[i];
 873             if (needcomma)
 874                 output.println(",");
 875             needcomma=true;
 876             if (cn.getSuperDesc()!=null) {
 877                 ClassDescriptor cdsuper=cn.getSuperDesc();
 878                 output.print(cdsuper.getId());
 879             } else
 880                 output.print("-1");
 881         }
 882         output.println("};");
 883     }
 884
 885     /** Force consistent field ordering between inherited classes. */
 886
 887     private void printClassStruct(ClassDescriptor cn, PrintWriter classdefout) {
 888
 889         ClassDescriptor sp=cn.getSuperDesc();
 890         if (sp!=null)
 891             printClassStruct(sp, classdefout);
 892
 893         if (!fieldorder.containsKey(cn)) {
 894             Vector fields=new Vector();
 895             fieldorder.put(cn,fields);
 896             Iterator fieldit=cn.getFields();
 897             while(fieldit.hasNext()) {
 898                 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
 899                 if (sp==null||!sp.getFieldTable().contains(fd.getSymbol()))
 900                     fields.add(fd);
 901             }
 902         }
 903         Vector fields=(Vector)fieldorder.get(cn);
 904
 905         for(int i=0;i<fields.size();i++) {
 906             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 907             if (fd.getType().isClass()||fd.getType().isArray())
 908                 classdefout.println("  struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
 909             else
 910                 classdefout.println("  "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
 911         }
 912     }
 913
 914
 915     /* Map flags to integers consistently between inherited
 916      * classes. */
 917
 918     private void mapFlags(ClassDescriptor cn) {
 919         ClassDescriptor sp=cn.getSuperDesc();
 920         if (sp!=null)
 921             mapFlags(sp);
 922         int max=0;
 923         if (!flagorder.containsKey(cn)) {
 924             Hashtable flags=new Hashtable();
 925             flagorder.put(cn,flags);
 926             if (sp!=null) {
 927                 Hashtable superflags=(Hashtable)flagorder.get(sp);
 928                 Iterator superflagit=superflags.keySet().iterator();
 929                 while(superflagit.hasNext()) {
 930                     FlagDescriptor fd=(FlagDescriptor)superflagit.next();
 931                     Integer number=(Integer)superflags.get(fd);
 932                     flags.put(fd, number);
 933                     if ((number.intValue()+1)>max)
 934                         max=number.intValue()+1;
 935                 }
 936             }
 937
 938             Iterator flagit=cn.getFlags();
 939             while(flagit.hasNext()) {
 940                 FlagDescriptor fd=(FlagDescriptor)flagit.next();
 941                 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
 942                     flags.put(fd, new Integer(max++));
 943             }
 944         }
 945     }
 946
 947
 948     /** This function outputs (1) structures that parameters are
 949      * passed in (when PRECISE GC is enabled) and (2) function
 950      * prototypes for the methods */
 951
 952     private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
 953         /* Output class structure */
 954         classdefout.println("struct "+cn.getSafeSymbol()+" {");
 955         classdefout.println("  int type;");
 956         if (state.THREAD) {
 957             classdefout.println("  pthread_t tid;");
 958             classdefout.println("  void * lockentry;");
 959             classdefout.println("  int lockcount;");
 960         }
 961
 962         if (state.TASK) {
 963             classdefout.println("  int flag;");
 964             classdefout.println("  void * flagptr;");
 965             if (state.OPTIONAL){
 966                 classdefout.println("  int failedstatus;");
 967                 classdefout.println("  int hashcode;");
 968                 classdefout.println("  int numexitfses;");
 969                 classdefout.println("  int * exitfses;");
 970                 classdefout.println("  int numotds;");
 971                 classdefout.println("  struct optionaltaskdescriptor ** otds;");
 972             }
 973         }
 974         printClassStruct(cn, classdefout);
 975         classdefout.println("};\n");
 976
 977         if (state.DSM) {
 978             /* Cycle through LocalityBindings */
 979             HashSet<MethodDescriptor> nativemethods=new HashSet<MethodDescriptor>();
 980             Set<LocalityBinding> lbset=locality.getClassBindings(cn);
 981             if (lbset!=null) {
 982                 for(Iterator<LocalityBinding> lbit=lbset.iterator();lbit.hasNext();) {
 983                     LocalityBinding lb=lbit.next();
 984                     MethodDescriptor md=lb.getMethod();
 985                     if (md.getModifiers().isNative()) {
 986                         //make sure we only print a native method once
 987                         if (nativemethods.contains(md))
 988                             continue;
 989                         else
 990                             nativemethods.add(md);
 991                     }
 992                     generateMethod(cn, md, lb, headersout, output);
 993                 }
 994             }
 995             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
 996                 MethodDescriptor md=(MethodDescriptor)methodit.next();
 997                 if (md.getModifiers().isNative()&&!nativemethods.contains(md)) {
 998                     //Need to build param structure for library code
 999                     FlatMethod fm=state.getMethodFlat(md);
1000                     generateTempStructs(fm, null);
1001                     generateMethodParam(cn, md, null, output);
1002                 }
1003             }
1004
1005         } else
1006             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1007                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1008                 generateMethod(cn, md, null, headersout, output);
1009             }
1010     }
1011
1012     private void generateMethodParam(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter output) {
1013         /* Output parameter structure */
1014         if (GENERATEPRECISEGC) {
1015             ParamsObject objectparams=(ParamsObject) paramstable.get(md);
1016             if (state.DSM&&lb!=null)
1017                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1018             else
1019                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1020             output.println("  int size;");
1021             output.println("  void * next;");
1022             for(int i=0;i<objectparams.numPointers();i++) {
1023                 TempDescriptor temp=objectparams.getPointer(i);
1024                 output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1025             }
1026             output.println("};\n");
1027         }
1028     }
1029
1030
1031     private void generateMethod(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter headersout, PrintWriter output) {
1032         FlatMethod fm=state.getMethodFlat(md);
1033         generateTempStructs(fm, lb);
1034
1035         ParamsObject objectparams=(ParamsObject) paramstable.get(md);
1036         TempObject objecttemps=(TempObject) tempstable.get(md);
1037
1038         generateMethodParam(cn, md, lb, output);
1039
1040         /* Output temp structure */
1041         if (GENERATEPRECISEGC) {
1042             if (state.DSM)
1043                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1044             else
1045                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1046             output.println("  int size;");
1047             output.println("  void * next;");
1048             for(int i=0;i<objecttemps.numPointers();i++) {
1049                 TempDescriptor temp=objecttemps.getPointer(i);
1050                 if (temp.getType().isNull())
1051                     output.println("  void * "+temp.getSafeSymbol()+";");
1052                 else
1053                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1054             }
1055             output.println("};\n");
1056         }
1057
1058         /********* Output method declaration ***********/
1059
1060         /* First the return type */
1061         if (md.getReturnType()!=null) {
1062             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1063                 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1064             else
1065                 headersout.print(md.getReturnType().getSafeSymbol()+" ");
1066         } else
1067             //catch the constructor case
1068             headersout.print("void ");
1069
1070         /* Next the method name */
1071         if (state.DSM) {
1072             headersout.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1073         } else
1074             headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1075
1076         boolean printcomma=false;
1077         if (GENERATEPRECISEGC) {
1078             if (state.DSM) {
1079                 headersout.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1080             } else
1081                 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1082             printcomma=true;
1083         }
1084
1085         if (state.DSM&&lb.isAtomic()) {
1086             if (printcomma)
1087                 headersout.print(", ");
1088             headersout.print("transrecord_t * trans");
1089             printcomma=true;
1090         }
1091
1092         /*  Output parameter list*/
1093         for(int i=0;i<objectparams.numPrimitives();i++) {
1094             TempDescriptor temp=objectparams.getPrimitive(i);
1095             if (printcomma)
1096                 headersout.print(", ");
1097             printcomma=true;
1098             if (temp.getType().isClass()||temp.getType().isArray())
1099                 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1100             else
1101                 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1102         }
1103         headersout.println(");\n");
1104     }
1105
1106
1107     /** This function outputs (1) structures that parameters are
1108      * passed in (when PRECISE GC is enabled) and (2) function
1109      * prototypes for the tasks */
1110
1111     private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
1112         /* Cycle through tasks */
1113         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
1114
1115         while(taskit.hasNext()) {
1116             /* Classify parameters */
1117             TaskDescriptor task=(TaskDescriptor)taskit.next();
1118             FlatMethod fm=state.getMethodFlat(task);
1119             generateTempStructs(fm, null);
1120
1121             ParamsObject objectparams=(ParamsObject) paramstable.get(task);
1122             TempObject objecttemps=(TempObject) tempstable.get(task);
1123
1124             /* Output parameter structure */
1125             if (GENERATEPRECISEGC) {
1126                 output.println("struct "+task.getSafeSymbol()+"_params {");
1127
1128                 output.println("  int size;");
1129                 output.println("  void * next;");
1130                 for(int i=0;i<objectparams.numPointers();i++) {
1131                     TempDescriptor temp=objectparams.getPointer(i);
1132                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1133                 }
1134
1135                 output.println("};\n");
1136                 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
1137                     maxtaskparams=objectparams.numPointers()+fm.numTags();
1138                 }
1139             }
1140
1141             /* Output temp structure */
1142             if (GENERATEPRECISEGC) {
1143                 output.println("struct "+task.getSafeSymbol()+"_locals {");
1144                 output.println("  int size;");
1145                 output.println("  void * next;");
1146                 for(int i=0;i<objecttemps.numPointers();i++) {
1147                     TempDescriptor temp=objecttemps.getPointer(i);
1148                     if (temp.getType().isNull())
1149                         output.println("  void * "+temp.getSafeSymbol()+";");
1150                     else if(temp.getType().isTag())
1151                         output.println("  struct "+
1152                                        (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1153                     else
1154                         output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1155                 }
1156                 output.println("};\n");
1157             }
1158
1159             /* Output task declaration */
1160             headersout.print("void " + task.getSafeSymbol()+"(");
1161
1162             boolean printcomma=false;
1163             if (GENERATEPRECISEGC) {
1164                 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1165             } else
1166                 headersout.print("void * parameterarray[]");
1167             headersout.println(");\n");
1168         }
1169     }
1170
1171     /***** Generate code for FlatMethod fm. *****/
1172
1173     private void generateFlatMethod(FlatMethod fm, LocalityBinding lb, PrintWriter output) {
1174         MethodDescriptor md=fm.getMethod();
1175         TaskDescriptor task=fm.getTask();
1176
1177         ClassDescriptor cn=md!=null?md.getClassDesc():null;
1178
1179         ParamsObject objectparams=(ParamsObject)paramstable.get(md!=null?md:task);
1180         generateHeader(fm, lb, md!=null?md:task,output);
1181         TempObject objecttemp=(TempObject) tempstable.get(md!=null?md:task);
1182         if (state.DSM&&lb.getHasAtomic()) {
1183             output.println("transrecord_t * trans;");
1184         }
1185
1186         if (GENERATEPRECISEGC) {
1187             if (md!=null&&state.DSM)
1188                 output.print("   struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1189             else if (md!=null&&!state.DSM)
1190                 output.print("   struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1191             else
1192                 output.print("   struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
1193
1194             output.print(objecttemp.numPointers()+",");
1195             output.print(paramsprefix);
1196             for(int j=0;j<objecttemp.numPointers();j++)
1197                 output.print(", NULL");
1198             output.println("};");
1199         }
1200
1201         for(int i=0;i<objecttemp.numPrimitives();i++) {
1202             TempDescriptor td=objecttemp.getPrimitive(i);
1203             TypeDescriptor type=td.getType();
1204             if (type.isNull())
1205                 output.println("   void * "+td.getSafeSymbol()+";");
1206             else if (type.isClass()||type.isArray())
1207                 output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
1208             else
1209                 output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
1210         }
1211
1212         /* Assign labels to FlatNode's if necessary.*/
1213
1214         Hashtable<FlatNode, Integer> nodetolabel=assignLabels(fm);
1215
1216         /* Check to see if we need to do a GC if this is a
1217          * multi-threaded program...*/
1218
1219         if (state.THREAD&&GENERATEPRECISEGC) {
1220             output.println("checkcollect(&"+localsprefix+");");
1221         }
1222
1223         /* Do the actual code generation */
1224         FlatNode current_node=null;
1225         HashSet tovisit=new HashSet();
1226         HashSet visited=new HashSet();
1227         tovisit.add(fm.getNext(0));
1228         while(current_node!=null||!tovisit.isEmpty()) {
1229             if (current_node==null) {
1230                 current_node=(FlatNode)tovisit.iterator().next();
1231                 tovisit.remove(current_node);
1232             }
1233             visited.add(current_node);
1234             if (nodetolabel.containsKey(current_node))
1235                 output.println("L"+nodetolabel.get(current_node)+":");
1236             if (state.INSTRUCTIONFAILURE) {
1237                 if (state.THREAD) {
1238                     output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1239                 }
1240                 else
1241                     output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1242             }
1243             if (current_node.numNext()==0) {
1244                 output.print("   ");
1245                 generateFlatNode(fm, lb, current_node, output);
1246                 if (current_node.kind()!=FKind.FlatReturnNode) {
1247                     output.println("   return;");
1248                 }
1249                 current_node=null;
1250             } else if(current_node.numNext()==1) {
1251                 output.print("   ");
1252                 generateFlatNode(fm, lb, current_node, output);
1253                 FlatNode nextnode=current_node.getNext(0);
1254                 if (visited.contains(nextnode)) {
1255                     output.println("goto L"+nodetolabel.get(nextnode)+";");
1256                     current_node=null;
1257                 } else
1258                     current_node=nextnode;
1259             } else if (current_node.numNext()==2) {
1260                 /* Branch */
1261                 output.print("   ");
1262                 generateFlatCondBranch(fm, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1263                 if (!visited.contains(current_node.getNext(1)))
1264                     tovisit.add(current_node.getNext(1));
1265                 if (visited.contains(current_node.getNext(0))) {
1266                     output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1267                     current_node=null;
1268                 } else
1269                     current_node=current_node.getNext(0);
1270             } else throw new Error();
1271         }
1272
1273         output.println("}\n\n");
1274     }
1275
1276     /** This method assigns labels to FlatNodes */
1277
1278     private Hashtable<FlatNode, Integer> assignLabels(FlatMethod fm) {
1279         HashSet tovisit=new HashSet();
1280         HashSet visited=new HashSet();
1281         int labelindex=0;
1282         Hashtable<FlatNode, Integer> nodetolabel=new Hashtable<FlatNode, Integer>();
1283         tovisit.add(fm.getNext(0));
1284
1285         /*Assign labels first.  A node needs a label if the previous
1286          * node has two exits or this node is a join point. */
1287
1288         while(!tovisit.isEmpty()) {
1289             FlatNode fn=(FlatNode)tovisit.iterator().next();
1290             tovisit.remove(fn);
1291             visited.add(fn);
1292             for(int i=0;i<fn.numNext();i++) {
1293                 FlatNode nn=fn.getNext(i);
1294                 if(i>0) {
1295                     //1) Edge >1 of node
1296                     nodetolabel.put(nn,new Integer(labelindex++));
1297                 }
1298                 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
1299                     tovisit.add(nn);
1300                 } else {
1301                     //2) Join point
1302                     nodetolabel.put(nn,new Integer(labelindex++));
1303                 }
1304             }
1305         }
1306         return nodetolabel;
1307     }
1308
1309
1310     /** Generate text string that corresponds to the TempDescriptor td. */
1311     private String generateTemp(FlatMethod fm, TempDescriptor td) {
1312         MethodDescriptor md=fm.getMethod();
1313         TaskDescriptor task=fm.getTask();
1314         TempObject objecttemps=(TempObject) tempstable.get(md!=null?md:task);
1315
1316         if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1317             return td.getSafeSymbol();
1318         }
1319
1320         if (objecttemps.isLocalPtr(td)) {
1321             return localsprefix+"."+td.getSafeSymbol();
1322         }
1323
1324         if (objecttemps.isParamPtr(td)) {
1325             return paramsprefix+"->"+td.getSafeSymbol();
1326         }
1327         throw new Error();
1328     }
1329
1330     private void generateFlatNode(FlatMethod fm, LocalityBinding lb, FlatNode fn, PrintWriter output) {
1331         switch(fn.kind()) {
1332         case FKind.FlatAtomicEnterNode:
1333             generateFlatAtomicEnterNode(fm, lb, (FlatAtomicEnterNode) fn, output);
1334             return;
1335         case FKind.FlatAtomicExitNode:
1336             generateFlatAtomicExitNode(fm, lb, (FlatAtomicExitNode) fn, output);
1337             return;
1338         case FKind.FlatGlobalConvNode:
1339             generateFlatGlobalConvNode(fm, lb, (FlatGlobalConvNode) fn, output);
1340             return;
1341         case FKind.FlatTagDeclaration:
1342             generateFlatTagDeclaration(fm, (FlatTagDeclaration) fn,output);
1343             return;
1344         case FKind.FlatCall:
1345             generateFlatCall(fm, lb, (FlatCall) fn,output);
1346             return;
1347         case FKind.FlatFieldNode:
1348             generateFlatFieldNode(fm, lb, (FlatFieldNode) fn,output);
1349             return;
1350         case FKind.FlatElementNode:
1351             generateFlatElementNode(fm, (FlatElementNode) fn,output);
1352             return;
1353         case FKind.FlatSetElementNode:
1354             generateFlatSetElementNode(fm, (FlatSetElementNode) fn,output);
1355             return;
1356         case FKind.FlatSetFieldNode:
1357             generateFlatSetFieldNode(fm, lb, (FlatSetFieldNode) fn,output);
1358             return;
1359         case FKind.FlatNew:
1360             generateFlatNew(fm, (FlatNew) fn,output);
1361             return;
1362         case FKind.FlatOpNode:
1363             generateFlatOpNode(fm, (FlatOpNode) fn,output);
1364             return;
1365         case FKind.FlatCastNode:
1366             generateFlatCastNode(fm, (FlatCastNode) fn,output);
1367             return;
1368         case FKind.FlatLiteralNode:
1369             generateFlatLiteralNode(fm, (FlatLiteralNode) fn,output);
1370             return;
1371         case FKind.FlatReturnNode:
1372             generateFlatReturnNode(fm, (FlatReturnNode) fn,output);
1373             return;
1374         case FKind.FlatNop:
1375             output.println("/* nop */");
1376             return;
1377         case FKind.FlatBackEdge:
1378             if (state.THREAD&&GENERATEPRECISEGC) {
1379                 output.println("checkcollect(&"+localsprefix+");");
1380             } else
1381                 output.println("/* nop */");
1382             return;
1383         case FKind.FlatCheckNode:
1384             generateFlatCheckNode(fm, (FlatCheckNode) fn, output);
1385             return;
1386         case FKind.FlatFlagActionNode:
1387             generateFlatFlagActionNode(fm, (FlatFlagActionNode) fn, output);
1388             return;
1389         }
1390         throw new Error();
1391
1392     }
1393
1394     public void generateFlatGlobalConvNode(FlatMethod fm, LocalityBinding lb, FlatGlobalConvNode fgcn, PrintWriter output) {
1395         if (lb!=fgcn.getLocality())
1396             return;
1397         /* Have to generate flat globalconv */
1398         if (fgcn.getMakePtr()) {
1399             output.println(generateTemp(fm, fgcn.getSrc())+"=transRead(trans,"+generateTemp(fm, fgcn.getSrc())+");");
1400         } else {
1401             /* Need to convert to OID */
1402             output.println(generateTemp(fm, fgcn.getSrc())+"=OID("+generateTemp(fm, fgcn.getSrc())+");");
1403         }
1404     }
1405
1406     public void generateFlatAtomicEnterNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicEnterNode faen, PrintWriter output) {
1407         /* Check to see if we need to generate code for this atomic */
1408         if (locality.getAtomic(lb).get(faen.getPrev(0)).intValue()>0)
1409             return;
1410         /* Backup the temps. */
1411         for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1412             TempDescriptor tmp=tmpit.next();
1413             output.println(generateTemp(fm, backuptable.get(tmp))+"="+generateTemp(fm,tmp)+";");
1414         }
1415         output.println("goto transstart"+faen.getIdentifier()+";");
1416
1417         /******* Print code to retry aborted transaction *******/
1418         output.println("transretry"+faen.getIdentifier()+":");
1419
1420         /* Restore temps */
1421         for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1422             TempDescriptor tmp=tmpit.next();
1423             output.println(generateTemp(fm, tmp)+"="+generateTemp(fm,backuptable.get(tmp))+";");
1424         }
1425
1426         /********* Need to revert local object store ********/
1427         String revertptr=generateTemp(fm, reverttable.get(lb));
1428
1429         output.println("while ("+revertptr+") {");
1430         output.println("struct ___Object___ * tmpptr;");
1431         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1432         output.println("REVERT_OBJ("+revertptr+");");
1433         output.println(revertptr+"=tmpptr;");
1434         output.println("}");
1435
1436         /******* Tell the runtime to start the transaction *******/
1437
1438         output.println("transstart"+faen.getIdentifier()+":");
1439         output.println("trans=transStart();");
1440     }
1441
1442     public void generateFlatAtomicExitNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicExitNode faen, PrintWriter output) {
1443         /* Check to see if we need to generate code for this atomic */
1444         if (locality.getAtomic(lb).get(faen).intValue()>0)
1445             return;
1446         //store the revert list before we lose the transaction object
1447         String revertptr=generateTemp(fm, reverttable.get(lb));
1448         output.println(revertptr+"=trans->revertlist;");
1449         output.println("if (transCommit(trans)) {");
1450         /* Transaction aborts if it returns true */
1451         output.println("goto transretry"+faen.getAtomicEnter().getIdentifier()+";");
1452         output.println("} else {");
1453         /* Need to commit local object store */
1454         output.println("while ("+revertptr+") {");
1455         output.println("struct ___Object___ * tmpptr;");
1456         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1457         output.println("COMMIT_OBJ("+revertptr+");");
1458         output.println(revertptr+"=tmpptr;");
1459         output.println("}");
1460         output.println("}");
1461     }
1462
1463     private void generateFlatCheckNode(FlatMethod fm,  FlatCheckNode fcn, PrintWriter output) {
1464         if (state.CONSCHECK) {
1465             String specname=fcn.getSpec();
1466             String varname="repairstate___";
1467             output.println("{");
1468             output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1469
1470             TempDescriptor[] temps=fcn.getTemps();
1471             String[] vars=fcn.getVars();
1472             for(int i=0;i<temps.length;i++) {
1473                 output.println(varname+"->"+vars[i]+"=(unsigned int)"+generateTemp(fm, temps[i])+";");
1474             }
1475
1476             output.println("if (doanalysis"+specname+"("+varname+")) {");
1477             output.println("free"+specname+"_state("+varname+");");
1478             output.println("} else {");
1479             output.println("/* Bad invariant */");
1480             output.println("free"+specname+"_state("+varname+");");
1481             output.println("abort_task();");
1482             output.println("}");
1483             output.println("}");
1484         }
1485     }
1486
1487     private void generateFlatCall(FlatMethod fm, LocalityBinding lb, FlatCall fc, PrintWriter output) {
1488         MethodDescriptor md=fc.getMethod();
1489         ParamsObject objectparams=(ParamsObject) paramstable.get(md);
1490         ClassDescriptor cn=md.getClassDesc();
1491         output.println("{");
1492         if (GENERATEPRECISEGC) {
1493             if (state.DSM) {
1494                 LocalityBinding fclb=locality.getBinding(lb, fc);
1495                 output.print("       struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1496             } else
1497                 output.print("       struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1498
1499             output.print(objectparams.numPointers());
1500             //      output.print(objectparams.getUID());
1501             output.print(", & "+localsprefix);
1502             if (fc.getThis()!=null) {
1503                 output.print(", ");
1504                 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis()));
1505             }
1506             for(int i=0;i<fc.numArgs();i++) {
1507                 Descriptor var=md.getParameter(i);
1508                 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1509                 if (objectparams.isParamPtr(paramtemp)) {
1510                     TempDescriptor targ=fc.getArg(i);
1511                     output.print(", ");
1512                     TypeDescriptor td=md.getParamType(i);
1513                     if (td.isTag())
1514                         output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()  +" *)"+generateTemp(fm, targ));
1515                     else
1516                         output.print("(struct "+md.getParamType(i).getSafeSymbol()  +" *)"+generateTemp(fm, targ));
1517                 }
1518             }
1519             output.println("};");
1520         }
1521         output.print("       ");
1522
1523
1524         if (fc.getReturnTemp()!=null)
1525             output.print(generateTemp(fm,fc.getReturnTemp())+"=");
1526
1527         /* Do we need to do virtual dispatch? */
1528         if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1529             //no
1530             if (state.DSM) {
1531                 LocalityBinding fclb=locality.getBinding(lb, fc);
1532                 output.print(cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1533             } else {
1534                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1535             }
1536         } else {
1537             //yes
1538             output.print("((");
1539             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1540                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1541             else
1542                 output.print(md.getReturnType().getSafeSymbol()+" ");
1543             output.print("(*)(");
1544
1545             boolean printcomma=false;
1546             if (GENERATEPRECISEGC) {
1547                 if (state.DSM) {
1548                     LocalityBinding fclb=locality.getBinding(lb, fc);
1549                     output.print("struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1550                 } else
1551                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1552                 printcomma=true;
1553             }
1554
1555             for(int i=0;i<objectparams.numPrimitives();i++) {
1556                 TempDescriptor temp=objectparams.getPrimitive(i);
1557                 if (printcomma)
1558                     output.print(", ");
1559                 printcomma=true;
1560                 if (temp.getType().isClass()||temp.getType().isArray())
1561                     output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1562                 else
1563                     output.print(temp.getType().getSafeSymbol());
1564             }
1565
1566             if (state.DSM) {
1567                 LocalityBinding fclb=locality.getBinding(lb, fc);
1568                 output.print("))virtualtable["+generateTemp(fm,fc.getThis())+"->type*"+maxcount+"+"+virtualcalls.getLocalityNumber(fclb)+"])");
1569             } else
1570                 output.print("))virtualtable["+generateTemp(fm,fc.getThis())+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1571         }
1572
1573         output.print("(");
1574         boolean needcomma=false;
1575         if (GENERATEPRECISEGC) {
1576             output.print("&__parameterlist__");
1577             needcomma=true;
1578         } else {
1579             if (fc.getThis()!=null) {
1580                 TypeDescriptor ptd=md.getThis().getType();
1581                 if (ptd.isClass()&&!ptd.isArray())
1582                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1583                 output.print(generateTemp(fm,fc.getThis()));
1584                 needcomma=true;
1585             }
1586         }
1587         for(int i=0;i<fc.numArgs();i++) {
1588             Descriptor var=md.getParameter(i);
1589             TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1590             if (objectparams.isParamPrim(paramtemp)) {
1591                 TempDescriptor targ=fc.getArg(i);
1592                 if (needcomma)
1593                     output.print(", ");
1594
1595                 TypeDescriptor ptd=md.getParamType(i);
1596                 if (ptd.isClass()&&!ptd.isArray())
1597                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1598                 output.print(generateTemp(fm, targ));
1599                 needcomma=true;
1600             }
1601         }
1602         output.println(");");
1603         output.println("   }");
1604     }
1605
1606     private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1607         Set subclasses=typeutil.getSubClasses(thiscd);
1608         if (subclasses==null)
1609             return true;
1610         for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1611             ClassDescriptor cd=(ClassDescriptor)classit.next();
1612             Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1613             for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1614                 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1615                 if (md.matches(matchmd))
1616                     return false;
1617             }
1618         }
1619         return true;
1620     }
1621
1622     private void generateFlatFieldNode(FlatMethod fm, LocalityBinding lb, FlatFieldNode ffn, PrintWriter output) {
1623         if (state.DSM) {
1624             Integer status=locality.getNodeTempInfo(lb).get(ffn).get(ffn.getSrc());
1625             if (status==LocalityAnalysis.GLOBAL) {
1626                 String field=ffn.getField().getSafeSymbol();
1627                 String src="((struct "+ffn.getSrc().getType().getSafeSymbol()+" *)((unsigned int)"+generateTemp(fm, ffn.getSrc())+"+sizeof(objheader_t)))";
1628                 String dst=generateTemp(fm, ffn.getDst());
1629
1630                 if (ffn.getField().getType().isPtr()||
1631                     ffn.getField().getType().isArray()) {
1632
1633                     //TODO: Uncomment this when we have runtime support
1634                     //if (ffn.getSrc()==ffn.getDst()) {
1635                     //output.println("{");
1636                     //output.println("void * temp="+src+";");
1637                     //output.println("if (temp&0x1) {");
1638                     //output.println("temp=transRead(trans, temp);");
1639                     //output.println(src+"->"+field+"="+temp+";");
1640                     //output.println("}");
1641                     //output.println(dst+"=temp;");
1642                     //output.println("}");
1643                     //} else {
1644                     output.println(dst+"="+ src +"->"+field+ ";");
1645                     //output.println("if ("+dst+"&0x1) {");
1646                     output.println(dst+"=transRead(trans,"+dst+");");
1647                     //output.println(src+"->"+field+"="+src+"->"+field+";");
1648                     //output.println("}");
1649                     //}
1650                 } else {
1651                     output.println(dst+"="+ src+"->"+field+";");
1652                 }
1653             } else if (status==LocalityAnalysis.LOCAL) {
1654                 output.println(generateTemp(fm, ffn.getDst())+"="+ generateTemp(fm,ffn.getSrc())+"->"+ ffn.getField().getSafeSymbol()+";");
1655             } else if (status==LocalityAnalysis.EITHER) {
1656                 //Code is reading from a null pointer
1657                 output.println("if ("+generateTemp(fm, ffn.getSrc())+") {");
1658                 output.println("printf(\"BIG ERROR\n\");exit(-1);}");
1659                 //This should throw a suitable null pointer error
1660                 output.println(generateTemp(fm, ffn.getDst())+"="+ generateTemp(fm,ffn.getSrc())+"->"+ ffn.getField().getSafeSymbol()+";");
1661             } else
1662                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
1663         } else
1664             output.println(generateTemp(fm, ffn.getDst())+"="+ generateTemp(fm,ffn.getSrc())+"->"+ ffn.getField().getSafeSymbol()+";");
1665     }
1666
1667     private void generateFlatSetFieldNode(FlatMethod fm, LocalityBinding lb, FlatSetFieldNode fsfn, PrintWriter output) {
1668         if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
1669             throw new Error("Can't set array length");
1670         if (state.DSM && locality.getAtomic(lb).get(fsfn).intValue()>0) {
1671             Integer statussrc=locality.getNodeTempInfo(lb).get(fsfn).get(fsfn.getDst());
1672             Integer statusdst=locality.getNodeTempInfo(lb).get(fsfn).get(fsfn.getDst());
1673             boolean srcglobal=statusdst==LocalityAnalysis.GLOBAL;
1674
1675             String src=generateTemp(fm,fsfn.getSrc());
1676             String dst=generateTemp(fm,fsfn.getDst());
1677             if (srcglobal) {
1678                 output.println("{");
1679                 output.println("int srcoid="+src+"->"+oidstr+";");
1680             }
1681             if (statusdst.equals(LocalityAnalysis.GLOBAL)) {
1682                 String glbdst="(struct "+fsfn.getDst().getType().getSafeSymbol()+" *)((unsigned int)"+dst+" +sizeof(objheader_t)))";
1683                 //mark it dirty
1684                 output.println("((objheader_t *)"+dst+")->status|=DIRTY;");
1685                 if (srcglobal)
1686                     output.println(glbdst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
1687                 else
1688                     output.println(glbdst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
1689             } else if (statusdst.equals(LocalityAnalysis.LOCAL)) {
1690                 /** Check if we need to copy */
1691                 output.println("if(!"+dst+"->"+localcopystr+") {");
1692                 /* Link object into list */
1693                 output.println(dst+"->"+nextobjstr+"=trans->localtrans;");
1694                 output.println("trans->localtrans="+dst+";");
1695                 if (GENERATEPRECISEGC)
1696                     output.println("COPY_OBJ((struct garbagelist *)&"+localsprefix+",(struct ___Object___ *)"+dst+");");
1697                 else
1698                     output.println("COPY_OBJ("+dst+");");
1699                 output.println("}");
1700                 if (srcglobal)
1701                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
1702                 else
1703                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
1704             } else if (statusdst.equals(LocalityAnalysis.EITHER)) {
1705                 //writing to a null...bad
1706                 output.println("if ("+dst+") {");
1707                 output.println("printf(\"BIG ERROR 2\n\");exit(-1);}");
1708                 if (srcglobal)
1709                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
1710                 else
1711                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
1712             }
1713             if (srcglobal) {
1714                 output.println("}");
1715             }
1716         } else {
1717             output.println(generateTemp(fm, fsfn.getDst())+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
1718         }
1719     }
1720
1721     private void generateFlatElementNode(FlatMethod fm, FlatElementNode fen, PrintWriter output) {
1722         TypeDescriptor elementtype=fen.getSrc().getType().dereference();
1723         String type="";
1724
1725         if (elementtype.isArray()||elementtype.isClass())
1726             type="void *";
1727         else
1728             type=elementtype.getSafeSymbol()+" ";
1729
1730         if (fen.needsBoundsCheck()) {
1731             output.println("if ("+generateTemp(fm, fen.getIndex())+"< 0 || "+generateTemp(fm, fen.getIndex())+" >= "+generateTemp(fm,fen.getSrc()) + "->___length___)");
1732             output.println("failedboundschk();");
1733         }
1734
1735         output.println(generateTemp(fm, fen.getDst())+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc())+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex())+"];");
1736     }
1737
1738     private void generateFlatSetElementNode(FlatMethod fm, FlatSetElementNode fsen, PrintWriter output) {
1739         //TODO: need dynamic check to make sure this assignment is actually legal
1740         //Because Object[] could actually be something more specific...ie. Integer[]
1741
1742         TypeDescriptor elementtype=fsen.getDst().getType().dereference();
1743         String type="";
1744
1745         if (elementtype.isArray()||elementtype.isClass())
1746             type="void *";
1747         else
1748             type=elementtype.getSafeSymbol()+" ";
1749
1750         if (fsen.needsBoundsCheck()) {
1751             output.println("if ("+generateTemp(fm, fsen.getIndex())+"< 0 || "+generateTemp(fm, fsen.getIndex())+" >= "+generateTemp(fm,fsen.getDst()) + "->___length___)");
1752             output.println("failedboundschk();");
1753         }
1754
1755         output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst())+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex())+"]="+generateTemp(fm,fsen.getSrc())+";");
1756     }
1757
1758     private void generateFlatNew(FlatMethod fm, FlatNew fn, PrintWriter output) {
1759         if (fn.getType().isArray()) {
1760             int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
1761             if (GENERATEPRECISEGC) {
1762                 output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize())+");");
1763             } else {
1764                 output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize())+");");
1765             }
1766         } else {
1767             if (GENERATEPRECISEGC) {
1768                 output.println(generateTemp(fm,fn.getDst())+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
1769             } else {
1770                 output.println(generateTemp(fm,fn.getDst())+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
1771             }
1772         }
1773     }
1774
1775     private void generateFlatTagDeclaration(FlatMethod fm, FlatTagDeclaration fn, PrintWriter output) {
1776         if (GENERATEPRECISEGC) {
1777             output.println(generateTemp(fm,fn.getDst())+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
1778         } else {
1779             output.println(generateTemp(fm,fn.getDst())+"=allocate_tag("+state.getTagId(fn.getType())+");");
1780         }
1781     }
1782
1783     private void generateFlatOpNode(FlatMethod fm, FlatOpNode fon, PrintWriter output) {
1784         if (fon.getRight()!=null)
1785             output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+fon.getOp().toString()+generateTemp(fm,fon.getRight())+";");
1786         else if (fon.getOp().getOp()==Operation.ASSIGN)
1787             output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
1788         else if (fon.getOp().getOp()==Operation.UNARYPLUS)
1789             output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
1790         else if (fon.getOp().getOp()==Operation.UNARYMINUS)
1791             output.println(generateTemp(fm, fon.getDest())+" = -"+generateTemp(fm, fon.getLeft())+";");
1792         else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
1793             output.println(generateTemp(fm, fon.getDest())+" = !"+generateTemp(fm, fon.getLeft())+";");
1794         else
1795             output.println(generateTemp(fm, fon.getDest())+fon.getOp().toString()+generateTemp(fm, fon.getLeft())+";");
1796     }
1797
1798     private void generateFlatCastNode(FlatMethod fm, FlatCastNode fcn, PrintWriter output) {
1799         /* TODO: Do type check here */
1800         if (fcn.getType().isArray()) {
1801             throw new Error();
1802         } else if (fcn.getType().isClass())
1803             output.println(generateTemp(fm,fcn.getDst())+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc())+";");
1804         else
1805             output.println(generateTemp(fm,fcn.getDst())+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc())+";");
1806     }
1807
1808     private void generateFlatLiteralNode(FlatMethod fm, FlatLiteralNode fln, PrintWriter output) {
1809         if (fln.getValue()==null)
1810             output.println(generateTemp(fm, fln.getDst())+"=0;");
1811         else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
1812             if (GENERATEPRECISEGC) {
1813                 output.println(generateTemp(fm, fln.getDst())+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1814             } else {
1815                 output.println(generateTemp(fm, fln.getDst())+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1816             }
1817         } else if (fln.getType().isBoolean()) {
1818             if (((Boolean)fln.getValue()).booleanValue())
1819                 output.println(generateTemp(fm, fln.getDst())+"=1;");
1820             else
1821                 output.println(generateTemp(fm, fln.getDst())+"=0;");
1822         } else if (fln.getType().isChar()) {
1823             String st=FlatLiteralNode.escapeString(fln.getValue().toString());
1824             output.println(generateTemp(fm, fln.getDst())+"='"+st+"';");
1825         } else
1826             output.println(generateTemp(fm, fln.getDst())+"="+fln.getValue()+";");
1827     }
1828
1829     private void generateFlatReturnNode(FlatMethod fm, FlatReturnNode frn, PrintWriter output) {
1830         if (frn.getReturnTemp()!=null)
1831             output.println("return "+generateTemp(fm, frn.getReturnTemp())+";");
1832         else
1833             output.println("return;");
1834     }
1835
1836     private void generateFlatCondBranch(FlatMethod fm, FlatCondBranch fcb, String label, PrintWriter output) {
1837         output.println("if (!"+generateTemp(fm, fcb.getTest())+") goto "+label+";");
1838     }
1839
1840     /** This method generates header information for the method or
1841      * task referenced by the Descriptor des. */
1842
1843     private void generateHeader(FlatMethod fm, LocalityBinding lb, Descriptor des, PrintWriter output) {
1844         /* Print header */
1845         ParamsObject objectparams=(ParamsObject)paramstable.get(des);
1846         MethodDescriptor md=null;
1847         TaskDescriptor task=null;
1848         if (des instanceof MethodDescriptor)
1849             md=(MethodDescriptor) des;
1850         else
1851             task=(TaskDescriptor) des;
1852
1853         ClassDescriptor cn=md!=null?md.getClassDesc():null;
1854
1855         if (md!=null&&md.getReturnType()!=null) {
1856             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1857                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1858             else
1859                 output.print(md.getReturnType().getSafeSymbol()+" ");
1860         } else
1861             //catch the constructor case
1862             output.print("void ");
1863         if (md!=null) {
1864             if (state.DSM) {
1865                 output.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1866             } else
1867                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1868         } else
1869             output.print(task.getSafeSymbol()+"(");
1870
1871         boolean printcomma=false;
1872         if (GENERATEPRECISEGC) {
1873             if (md!=null) {
1874                 if (state.DSM) {
1875                     output.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1876                 } else
1877                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1878             } else
1879                 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1880             printcomma=true;
1881         }
1882
1883         if (state.DSM&&lb.isAtomic()) {
1884             if (printcomma)
1885                 output.print(", ");
1886             output.print("transrecord_t * trans");
1887             printcomma=true;
1888         }
1889
1890         if (md!=null) {
1891             /* Method */
1892             for(int i=0;i<objectparams.numPrimitives();i++) {
1893                 TempDescriptor temp=objectparams.getPrimitive(i);
1894                 if (printcomma)
1895                     output.print(", ");
1896                 printcomma=true;
1897                 if (temp.getType().isClass()||temp.getType().isArray())
1898                     output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1899                 else
1900                     output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1901             }
1902             output.println(") {");
1903         } else if (!GENERATEPRECISEGC) {
1904             /* Imprecise Task */
1905             output.println("void * parameterarray[]) {");
1906             /* Unpack variables */
1907             for(int i=0;i<objectparams.numPrimitives();i++) {
1908                 TempDescriptor temp=objectparams.getPrimitive(i);
1909                 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
1910             }
1911             for(int i=0;i<fm.numTags();i++) {
1912                 TempDescriptor temp=fm.getTag(i);
1913                 int offset=i+objectparams.numPrimitives();
1914                 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
1915             }
1916
1917             if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
1918                 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
1919         } else output.println(") {");
1920     }
1921
1922     public void generateFlatFlagActionNode(FlatMethod fm, FlatFlagActionNode ffan, PrintWriter output) {
1923         output.println("/* FlatFlagActionNode */");
1924
1925
1926         /* Process tag changes */
1927         Relation tagsettable=new Relation();
1928         Relation tagcleartable=new Relation();
1929
1930         Iterator tagsit=ffan.getTempTagPairs();
1931         while (tagsit.hasNext()) {
1932             TempTagPair ttp=(TempTagPair) tagsit.next();
1933             TempDescriptor objtmp=ttp.getTemp();
1934             TagDescriptor tag=ttp.getTag();
1935             TempDescriptor tagtmp=ttp.getTagTemp();
1936             boolean tagstatus=ffan.getTagChange(ttp);
1937             if (tagstatus) {
1938                 tagsettable.put(objtmp, tagtmp);
1939             } else {
1940                 tagcleartable.put(objtmp, tagtmp);
1941             }
1942         }
1943
1944
1945         Hashtable flagandtable=new Hashtable();
1946         Hashtable flagortable=new Hashtable();
1947
1948         /* Process flag changes */
1949         Iterator flagsit=ffan.getTempFlagPairs();
1950         while(flagsit.hasNext()) {
1951             TempFlagPair tfp=(TempFlagPair)flagsit.next();
1952             TempDescriptor temp=tfp.getTemp();
1953             Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
1954             FlagDescriptor flag=tfp.getFlag();
1955             if (flag==null) {
1956                 //Newly allocate objects that don't set any flags case
1957                 if (flagortable.containsKey(temp)) {
1958                     throw new Error();
1959                 }
1960                 int mask=0;
1961                 flagortable.put(temp,new Integer(mask));
1962             } else {
1963                 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
1964                 boolean flagstatus=ffan.getFlagChange(tfp);
1965                 if (flagstatus) {
1966                     int mask=0;
1967                     if (flagortable.containsKey(temp)) {
1968                         mask=((Integer)flagortable.get(temp)).intValue();
1969                     }
1970                     mask|=flagid;
1971                     flagortable.put(temp,new Integer(mask));
1972                 } else {
1973                     int mask=0xFFFFFFFF;
1974                     if (flagandtable.containsKey(temp)) {
1975                         mask=((Integer)flagandtable.get(temp)).intValue();
1976                     }
1977                     mask&=(0xFFFFFFFF^flagid);
1978                     flagandtable.put(temp,new Integer(mask));
1979                 }
1980             }
1981         }
1982
1983
1984         HashSet flagtagset=new HashSet();
1985         flagtagset.addAll(flagortable.keySet());
1986         flagtagset.addAll(flagandtable.keySet());
1987         flagtagset.addAll(tagsettable.keySet());
1988         flagtagset.addAll(tagcleartable.keySet());
1989
1990         Iterator ftit=flagtagset.iterator();
1991         while(ftit.hasNext()) {
1992             TempDescriptor temp=(TempDescriptor)ftit.next();
1993
1994
1995             Set tagtmps=tagcleartable.get(temp);
1996             if (tagtmps!=null) {
1997                 Iterator tagit=tagtmps.iterator();
1998                 while(tagit.hasNext()) {
1999                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2000                     if (GENERATEPRECISEGC)
2001                         output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
2002                     else
2003                         output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
2004                 }
2005             }
2006
2007             tagtmps=tagsettable.get(temp);
2008             if (tagtmps!=null) {
2009                 Iterator tagit=tagtmps.iterator();
2010                 while(tagit.hasNext()) {
2011                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2012                     if (GENERATEPRECISEGC)
2013                         output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
2014                     else
2015                         output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
2016                 }
2017             }
2018
2019             int ormask=0;
2020             int andmask=0xFFFFFFF;
2021
2022             if (flagortable.containsKey(temp))
2023                 ormask=((Integer)flagortable.get(temp)).intValue();
2024             if (flagandtable.containsKey(temp))
2025                 andmask=((Integer)flagandtable.get(temp)).intValue();
2026             if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
2027                 output.println("flagorandinit("+generateTemp(fm, temp)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2028             } else {
2029                 output.println("flagorand("+generateTemp(fm, temp)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2030             }
2031         }
2032     }
2033
2034      void generateOptionalArrays(PrintWriter output, PrintWriter headers, Hashtable<ClassDescriptor, Hashtable<FlagState, HashSet>> safeexecution, Hashtable optionaltaskdescriptors) {
2035
2036          //GENERATE HEADERS
2037          headers.println("#include \"task.h\"\n\n");
2038          headers.println("#ifndef _OPTIONAL_STRUCT_");
2039          headers.println("#define _OPTIONAL_STRUCT_");
2040
2041
2042
2043
2044          //STRUCT PREDICATEMEMBER
2045          headers.println("struct predicatemember{");
2046          headers.println("int type;");
2047          headers.println("int numdnfterms;");
2048          headers.println("int * flags;");
2049          headers.println("int numtags;");
2050          headers.println("int * tags;\n};\n\n");
2051
2052          /*//STRUCT EXITSTATES
2053          headers.println("struct exitstates{");
2054          headers.println("int numflagstates;");
2055          headers.println("int * flagstatearray;\n};\n\n");*///appeared to be useless
2056
2057          //STRUCT OPTIONALTASKDESCRIPTOR
2058          headers.println("struct optionaltaskdescriptor{");
2059          headers.println("struct taskdescriptor * task;");
2060          headers.println("int numenterflags;");
2061          headers.println("int * enterflags;");
2062          headers.println("int numpredicatemembers;");
2063          headers.println("struct predicatemember ** predicatememberarray;");
2064          //headers.println("int numexitstates;");
2065          //headers.println("int numTotal;");
2066          //headers.println("struct exitstates ** exitstatesarray;\n};\n\n");
2067          headers.println("\n};\n\n");
2068
2069          //STRUCT FSANALYSISWRAPPER
2070          headers.println("struct fsanalysiswrapper{");
2071          headers.println("int  flags;");
2072          headers.println("int numtags;");
2073          headers.println("int * tags;");
2074          headers.println("int numoptionaltaskdescriptors;");
2075          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2076
2077          //STRUCT CLASSANALYSISWRAPPER
2078          headers.println("struct classanalysiswrapper{");
2079          headers.println("int type;");
2080          headers.println("int numotd;");
2081          headers.println("struct optionaltaskdescriptor ** otdarray;");
2082          headers.println("int numfsanalysiswrappers;");
2083          headers.println("struct fsanalysiswrapper ** fsanalysiswrapperarray;\n};\n\n");
2084
2085          headers.println("struct classanalysiswrapper * classanalysiswrapperarray[];\n");
2086
2087
2088
2089          Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
2090          while(taskit.hasNext()) {
2091              TaskDescriptor td=(TaskDescriptor)taskit.next();
2092              headers.println("extern struct taskdescriptor task_"+td.getSafeSymbol()+";");
2093          }
2094
2095
2096
2097          //GENERATE STRUCTS
2098          output.println("#include \"optionalstruct.h\"\n\n");
2099          HashSet processedcd = new HashSet();
2100
2101          int maxotd=0;
2102          Enumeration e = safeexecution.keys();
2103          while (e.hasMoreElements()) {
2104              int numotd=0;
2105              //get the class
2106              ClassDescriptor cdtemp=(ClassDescriptor)e.nextElement();
2107              Hashtable flaginfo=(Hashtable)flagorder.get(cdtemp);//will be used several times
2108
2109              //////////////////////////DEBUG
2110              System.out.println(cdtemp.getSymbol()+" "+cdtemp.getId());
2111              for(Iterator flags = cdtemp.getFlags(); flags.hasNext();){
2112                  FlagDescriptor flagd = (FlagDescriptor)flags.next();
2113                  int flagid=1<<((Integer)flaginfo.get(flagd)).intValue();
2114                  System.out.println(" Flag "+flagd.getSymbol()+" 0x"+Integer.toHexString(flagid)+" int "+flagid);
2115              }
2116              ///////////////////////////
2117
2118              //Generate the struct of optionals
2119              if((Hashtable)optionaltaskdescriptors.get(cdtemp)==null) System.out.println("Was in cd :"+cdtemp.getSymbol());
2120              Collection c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2121              numotd = c_otd.size();
2122              if(maxotd<numotd) maxotd = numotd;
2123              if( !c_otd.isEmpty() ){
2124                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2125                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2126
2127                      //generate the int arrays for the predicate
2128                      Predicate predicate = otd.predicate;
2129                      int predicateindex = 0;
2130                      //iterate through the classes concerned by the predicate
2131                      Collection c_vard = predicate.vardescriptors.values();
2132                      for(Iterator vard_it = c_vard.iterator(); vard_it.hasNext();){
2133                          VarDescriptor vard = (VarDescriptor)vard_it.next();
2134                          TypeDescriptor typed = vard.getType();
2135
2136                          //generate for flags
2137                          HashSet fen_hashset = predicate.flags.get(vard.getSymbol());
2138                          output.println("int predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2139                          int numberterms=0;
2140                          if (fen_hashset!=null){
2141                              for (Iterator fen_it = fen_hashset.iterator(); fen_it.hasNext();){
2142                                  FlagExpressionNode fen = (FlagExpressionNode)fen_it.next();
2143                                  if (fen==null) {
2144                                  }
2145                                  else {
2146
2147                                      DNFFlag dflag=fen.getDNF();
2148                                      numberterms+=dflag.size();
2149
2150                                      Hashtable flags=(Hashtable)flagorder.get(typed.getClassDesc());
2151
2152                                      for(int j=0;j<dflag.size();j++) {
2153                                          if (j!=0)
2154                                              output.println(",");
2155                                          Vector term=dflag.get(j);
2156                                          int andmask=0;
2157                                          int checkmask=0;
2158                                          for(int k=0;k<term.size();k++) {
2159                                              DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
2160                                              FlagDescriptor fd=dfa.getFlag();
2161                                              boolean negated=dfa.getNegated();
2162                                              int flagid=1<<((Integer)flags.get(fd)).intValue();
2163                                              andmask|=flagid;
2164                                              if (!negated)
2165                                                  checkmask|=flagid;
2166                                          }
2167                                          output.print("/*andmask*/0x"+Integer.toHexString(andmask)+", /*checkmask*/0x"+Integer.toHexString(checkmask));
2168                                      }
2169                                  }
2170                              }
2171                          }
2172                          output.println("};\n");
2173
2174                          //generate for tags
2175                          TagExpressionList tagel = predicate.tags.get(vard.getSymbol());
2176                          output.println("int predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2177                          //BUG...added next line to fix, test with any task program
2178                          int numtags = 0;
2179                          if (tagel!=null){
2180                              for(int j=0;j<tagel.numTags();j++) {
2181                                  if (j!=0)
2182                                      output.println(",");
2183                                  TempDescriptor tmp=tagel.getTemp(j);
2184                                  //got rid of slot, maybe some improvments to do ???
2185                                  output.println("/*tagid*/"+state.getTagId(tmp.getTag()));
2186                              }
2187                              numtags = tagel.numTags();
2188                          }
2189                          output.println("};");
2190
2191                          //store the result into a predicatemember struct
2192                          output.println("struct predicatemember predicatemember_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2193                          output.println("/*type*/"+typed.getClassDesc().getId()+",");
2194                          output.println("/* number of dnf terms */"+numberterms+",");
2195                          output.println("predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2196                          output.println("/* number of tag */"+numtags+",");
2197                          output.println("predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2198                          output.println("};\n");
2199                          predicateindex++;
2200                      }
2201
2202
2203                      //generate an array that stores the entire predicate
2204                      output.println("struct predicatemember * predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2205                      for( int j = 0; j<predicateindex; j++){
2206                          if( j != predicateindex-1)output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2207                          else output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2208                      }
2209                      output.println("};\n");
2210
2211                      //generate the struct for possible exitfses, appeared to be useless
2212                      /*HashSet<HashSet> exitfses = otd.exitfses;
2213                      int exitindex = 0;
2214                      int nbexit = exitfses.size();
2215                      int fsnumber;
2216
2217                      //iterate through possible exits
2218                      int nbtotal=0;
2219                      for(Iterator exitfseshash = exitfses.iterator(); exitfseshash.hasNext();){
2220                          HashSet temp_hashset = (HashSet)exitfseshash.next();
2221                          fsnumber = 0 ;
2222                          output.println("int flag_EXIT"+exitindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2223                          //iterate through possible FSes corresponding to the exit
2224                          for(Iterator exfses = temp_hashset.iterator(); exfses.hasNext();){
2225                              FlagState fs = (FlagState)exfses.next();
2226                              fsnumber++;
2227                              nbtotal++;
2228                              int flagid=0;
2229                              for(Iterator flags = fs.getFlags(); flags.hasNext();){
2230                                  FlagDescriptor flagd = (FlagDescriptor)flags.next();
2231                                  int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2232                                  flagid+=id;
2233                              }
2234                              if(fsnumber!=1) output.print(",");
2235                              output.print(flagid);
2236                              //do the same for tags.
2237                              //maybe not needed because no tag changes tolerated.
2238                          }
2239                          output.println("};\n");
2240
2241
2242                          //store that information in a struct
2243                          output.println("struct exitstates exitstates"+exitindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2244                          output.println(fsnumber+",");
2245                          output.println("flag_EXIT"+exitindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2246                          output.println("};\n");
2247
2248                          exitindex++;
2249                      }
2250
2251                      //store the information concerning all exits into an array
2252                      output.println("struct exitstates * exitstatesarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2253                      for( int j = 0; j<nbexit; j++){
2254                          if( j != nbexit-1)output.println("&exitstates"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2255                          else output.println("&exitstates"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"};\n");
2256                      }*/
2257
2258                      int fsnumber = 0 ;
2259                      output.println("int enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2260                          //iterate through possible FSes corresponding to the state when entering
2261                      for(Iterator fses = otd.flagstates.iterator(); fses.hasNext();){
2262                          FlagState fs = (FlagState)fses.next();
2263                          fsnumber++;
2264                          int flagid=0;
2265                          for(Iterator flags = fs.getFlags(); flags.hasNext();){
2266                              FlagDescriptor flagd = (FlagDescriptor)flags.next();
2267                              int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2268                              flagid+=id;
2269                          }
2270                          if(fsnumber!=1) output.print(",");
2271                          output.print(flagid);
2272                          //tag information not needed because tag changes are not tolerated.
2273                      }
2274                      output.println("};\n");
2275
2276
2277                      //generate optionaltaskdescriptor that actually includes exit fses, predicate and the task concerned
2278                      output.println("struct optionaltaskdescriptor optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2279                      output.println("&task_"+otd.td.getSafeSymbol()+",");
2280                      output.println("/*number of enter flags*/"+fsnumber+",");
2281                      output.println("enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2282                      output.println("/*number of members */"+predicateindex+",");
2283                      output.println("predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2284                      //output.println("/*number of exitstates */"+nbexit+",");
2285                      //output.println("/*total number of fses*/"+nbtotal+",");
2286                      //output.println("exitstatesarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2287                      output.println("};\n");
2288                  }
2289              }
2290              else continue; // if there is no optionals, there is no need to build the rest of the struct
2291
2292              output.println("struct optionaltaskdescriptor * otdarray"+cdtemp.getSafeSymbol()+"[]={");
2293              c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2294              int x=0;
2295              if( !c_otd.isEmpty() ){
2296                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2297                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2298                      if(x!=0) output.println(",");
2299                      x++;
2300                      output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2301                  }
2302              }
2303              output.println("};\n");
2304
2305              //get all the possible falgstates reachable by an object
2306              Hashtable hashtbtemp = safeexecution.get(cdtemp);
2307              Enumeration fses = hashtbtemp.keys();
2308              int fscounter = 0;
2309              while(fses.hasMoreElements()){
2310                  FlagState fs = (FlagState)fses.nextElement();
2311                  fscounter++;
2312
2313                  //get the set of OptionalTaskDescriptors corresponding
2314                  HashSet availabletasks = (HashSet)hashtbtemp.get(fs);
2315                  //iterate through the OptionalTaskDescriptors and store the pointers to the optionals struct (see on top) into an array
2316
2317                  output.println("struct optionaltaskdescriptor * optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[] = {");
2318                  for(Iterator mos = availabletasks.iterator(); mos.hasNext();){
2319                      OptionalTaskDescriptor mm = (OptionalTaskDescriptor)mos.next();
2320                      if(!mos.hasNext()) output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol());
2321
2322                      else output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2323                  }
2324
2325                  output.println("};\n");
2326
2327                  //process flag information (what the flag after failure is) so we know what optionaltaskdescriptors to choose.
2328
2329                  int flagid=0;
2330                  for(Iterator flags = fs.getFlags(); flags.hasNext();){
2331                      FlagDescriptor flagd = (FlagDescriptor)flags.next();
2332                      int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2333                      flagid+=id;
2334                  }
2335
2336
2337                  //process tag information
2338
2339                  int tagcounter = 0;
2340                  boolean first = true;
2341                  Enumeration tag_enum = fs.getTags();
2342                  output.println("int tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2343                  while(tag_enum.hasMoreElements()){
2344                      tagcounter++;
2345                      TagDescriptor tagd = (TagDescriptor)tag_enum.nextElement();
2346                      if(first==true)
2347                          first = false;
2348                      else
2349                          output.println(", ");
2350                      output.println("/*tagid*/"+state.getTagId(tagd));
2351                  }
2352                  output.println("};");
2353
2354
2355                  //Store the result in fsanalysiswrapper
2356
2357                  output.println("struct fsanalysiswrapper fsanalysiswrapper_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"={");
2358                  output.println("/*flag*/"+flagid+",");
2359                  output.println("/* number of tags*/"+tagcounter+",");
2360                  output.println("tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2361                  output.println("/* number of optionaltaskdescriptors */"+availabletasks.size()+",");
2362                  output.println("optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol());
2363                  output.println("};\n");
2364
2365              }
2366
2367              //Build the array of fsanalysiswrappers
2368              output.println("struct fsanalysiswrapper * fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"[] = {");
2369              for(int i = 0; i<fscounter; i++){
2370                  if(i==fscounter-1) output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol()+"};\n");
2371
2372                      else output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol()+",");
2373              }
2374
2375              //Build the classanalysiswrapper referring to the previous array
2376              output.println("struct classanalysiswrapper classanalysiswrapper_"+cdtemp.getSafeSymbol()+"={");
2377              output.println("/*type*/"+cdtemp.getId()+",");
2378              output.println("/*numotd*/"+numotd+",");
2379              output.println("otdarray"+cdtemp.getSafeSymbol()+",");
2380              output.println("/* number of fsanalysiswrappers */"+fscounter+",");
2381              output.println("fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"};\n");
2382              fscounter = 0;
2383              processedcd.add(cdtemp);
2384          }
2385
2386          //build an array containing every classes for which code has been build
2387          output.println("struct classanalysiswrapper * classanalysiswrapperarray[]={");
2388          for(Iterator classit = processedcd.iterator(); classit.hasNext();){
2389              ClassDescriptor cdtemp=(ClassDescriptor)classit.next();
2390              if(!classit.hasNext()) output.println("&classanalysiswrapper_"+cdtemp.getSafeSymbol()+"};\n");
2391              else output.println("&classanalysiswrapper_"+cdtemp.getSafeSymbol()+",");
2392          }
2393
2394          output.println("int numclasses="+processedcd.size()+";");
2395          headers.println("extern numclasses;");
2396          output.println("int maxotd="+maxotd+";");
2397          headers.println("extern maxotd;");
2398          headers.println("#endif");
2399
2400
2401      }
2402
2403 }
2404
2405
2406
2407
2408
2409